how to connect to access 2007 with c#

问题

hey, i am new at connecting to dataBases and for some reason each time i use those following lines my program collapse:

    string connectionString = "Provider=Microsoft.ACE.OLEDB.12.0;DataSource=|DataDirectory|\Company.accdb"
    OleDbConnection con = new OleDbConnection(connectionString);

inside my debug folder i got Company.accdb access file edit: i am getting 'Microsoft.Ace.OLEDB12.0' provider is not registered on the local machine any idea how to solve it? thanks in advance for your help

回答1:

Two things -

1. This connection string rely on ACE OLEDB provider (typically comes with Office 2007 - your machine need to have this provider)

2. Connection string is requesting data dictionary. You probably need to use below form:

   Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:\myFolder\myAccess2007file.accdb;Persist Security Info=False;

For password protected files, form would be Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:\myFolder\myAccess2007file.accdb;Jet OLEDB:Database Password=MyDbPassword;

I will also suggest trying different Provider (ODBC perhaps) instead. For various connection strings for Access 2007, refer http://www.connectionstrings.com/access-2007

来源：https://stackoverflow.com/questions/4427523/how-to-connect-to-access-2007-with-c-sharp